TOH is tenant-owned home and POH is park-owned home. On the 41 TOH lots you own the dirt, the road and the utility lines, and the resident owns the house sitting on the pad and pays you $310 a month in lot rent for the ground. That's the land-lease model, and it's why the "nobody fixes anything" line gets repeated. You still fix roads, water lines, and the trees, just not somebody's furnace.
The 7 POHs are homes the park itself owns and rents out, house and land together, which is why they show $795. That extra $485 is real money and it comes with a real job. On those seven you're a normal landlord with a normal tenant, so leaking roofs, failed water heaters and turnover cleanup are yours. Many buyers plan to sell POHs to the residents over time to move them onto the land-lease side.
On the terms: strictly, manufactured home means a factory-built house built to the federal HUD code, which took effect in 1976. Homes built before that are mobile homes, and they're a different animal for insurance and for financing. In everyday market talk people call all of it mobile homes, including the parks themselves, and the sector name is mobile home parks even when every home in it is HUD-code.
One thing to check on this listing before anything else: appraisers and buyers usually value POH income at a lower multiple than lot rent, because it costs more to earn. If the asking price treats $795 and $310 the same way, the price is richer than it looks.